Need Serious Advice

Background: so I’m from a South Asian country my age is 23, we moved to Hong Kong about 15 years ago and after a few years my elder brother started a business we would import stuff from China and sell online like on social media mostly in Hong Kong our customers are a small community of people but there was less competition so we made good money like good in a sense that we started from nothing and we are still running the same business but there have been many changes in the market and we couldn’t adapt to it over time. The situation right now is the cost of business has increased and revenue has decreased and we are desperately looking for new ways/ markets / channels to pursue so we started Amazon FBA and to test out the process we’ve sent our first product and got a few sales NOW i need advice as to how we can Scale this like a bit urgently what steps we should take. What should we consider what people to hire for what tasks and more. Since we live in Hong Kong and have a lot of experience in buying from China and can visit anytime we can source items at good prices to compete on Amazon. ALSO need general advice on how to do business and entrepreneurship or what other things we should consider overall.